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dual-tone multiple-frequency
comp., MS	tono de marcado de frecuencia múltiple (The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies)
English thesaurus
Dual-Tone Multiple-Frequency
abbr., scottish	DTMF
dual-tone multiple-frequency
comp., MS	Dual Tone Multiple-Frequency (The signaling system used in telephones with touchtone keypads, in which each digit is associated with two specific frequencies)